A large, wired proximity sensor switch that activates when a user’s body is within 1-in/2.5 cm of the switch top.

Scatir Switch Deluxe

Ablenet, Inc.

The Self-Calibrating Auditory Tone Infrared (SCATIR) Switch is a momentary-contact optical switch with auditory feedback that works by detecting a beam of reflected pulsed infrared light. Includes switch, sensor, eyeglass, and Gooseneck mounting kit.